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After installation, the DirectX 8.1 runtime cannot be uninstalled. DirectX is a system component. It cannot be uninstalled without reinstalling your operating system. Users of Windows 95 should continue using DirectX 8.0a. Applications designed for DirectX 8.1 take advantage of advanced features in computers running more recent versions of Windows, including Windows 98 and later versions.
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DirectX 8.1 will overwrite any earlier versions. DirectX 8.1 provides the latest update to the DirectX technology. It will ensure trouble-free installation and includes the latest USB game controller updates in addition to the features provided by DirectX 8.0.